PRE HEATER INSTALLATION COUNTER FLOW 134351A003

Warnings
|
1
1 Warnings
Danger
• Make sure that the mains supply to the unit is disconnected before performing any maintenance or
electrical work!
• All electrical connections must be carried out by an authorized installer and in accordance with local rules
and regulations.
2 General
A a pre-heater is available as an accessory for Systemair Topvex units with counterflow heat exchanger. A pre-heater
can be installed in the outdoor duct to prevent icing in the heat exchanger.
The kit contains of 1 expansion module, 1 pre-heater, 1 outdoor air sensor and 1 instruction.
3 Installation
3.1 Outdoor air sensor
Mount the enclosed outdoor air sensor to the outdoor air duct (OS in figure 1) before the pre-heater and assign it as an
outdoor air sensor in Corrigo (see chapter 3.3). Configure the previous installed outdoor air sensor located in the unit to
Extra unit temp.
Replace the existing OS-label inside the air handling unit with the new EUT-label. Attach the new OS-label next to the
added outdoor sensor.
EUT
OS
EF
SF
HE
PH
Fig. 1
Outdoor air
Supply air
Extract air
Exhaust air
OS
Outdoor air sensor
PH
Pre-heater
EUT Extra unit temp
EF
Extract air fan
SF
Supply air fan
HE
Heat exchanger
134351 | A003